Early in Malcolm's life he realized that many lighter skin african americans felt gifted over the darker ones because they were closer to the white man in complexion which gave them a sense of power and pride. Malcolm on the other hand learned to hate this. Because of the whites being the oppressors later on it made the african americans feel they were inferior and while some decided to fit in others decided to rebel. Malcolm would preach that its NOT ok for the white man to try to do whatever they wanted to black people and get away with it, because it would continue the cycle of oppression. Thats why he encouraged them to fight back in any way possible.
If you look closely you would see that a lot of countries hate America for the same reason of dominance and its not just african americans. Also, since its considered the best in the world and the land of opportunity many people from all over the world migrate here just to live the "American Dream". America has always had its way of getting a lot of power and coming across as the most powerful and for this many countries had felt less competent and come here to see if they could live a better life. So its this white supremacy that made this happen all from the very beginning.